--- /dev/null
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * Array helper class.
+ *
+ * $Id: arr.php 4346 2009-05-11 17:08:15Z zombor $
+ *
+ * @package Core
+ * @author Kohana Team
+ * @copyright (c) 2007-2008 Kohana Team
+ * @license http://kohanaphp.com/license.html
+ */
+class arr_Core {
+
+ /**
+ * Return a callback array from a string, eg: limit[10,20] would become
+ * array('limit', array('10', '20'))
+ *
+ * @param string callback string
+ * @return array
+ */
+ public static function callback_string($str)
+ {
+ // command[param,param]
+ if (preg_match('/([^\[]*+)\[(.+)\]/', (string) $str, $match))
+ {
+ // command
+ $command = $match[1];
+
+ // param,param
+ $params = preg_split('/(?<!\\\\),/', $match[2]);
+ $params = str_replace('\,', ',', $params);
+ }
+ else
+ {
+ // command
+ $command = $str;
+
+ // No params
+ $params = NULL;
+ }
+
+ return array($command, $params);
+ }
+
+ /**
+ * Rotates a 2D array clockwise.
+ * Example, turns a 2x3 array into a 3x2 array.
+ *
+ * @param array array to rotate
+ * @param boolean keep the keys in the final rotated array. the sub arrays of the source array need to have the same key values.
+ * if your subkeys might not match, you need to pass FALSE here!
+ * @return array
+ */
+ public static function rotate($source_array, $keep_keys = TRUE)
+ {
+ $new_array = array();
+ foreach ($source_array as $key => $value)
+ {
+ $value = ($keep_keys === TRUE) ? $value : array_values($value);
+ foreach ($value as $k => $v)
+ {
+ $new_array[$k][$key] = $v;
+ }
+ }
+
+ return $new_array;
+ }
+
+ /**
+ * Removes a key from an array and returns the value.
+ *
+ * @param string key to return
+ * @param array array to work on
+ * @return mixed value of the requested array key
+ */
+ public static function remove($key, & $array)
+ {
+ if ( ! array_key_exists($key, $array))
+ return NULL;
+
+ $val = $array[$key];
+ unset($array[$key]);
+
+ return $val;
+ }
+
+
+ /**
+ * Extract one or more keys from an array. Each key given after the first
+ * argument (the array) will be extracted. Keys that do not exist in the
+ * search array will be NULL in the extracted data.
+ *
+ * @param array array to search
+ * @param string key name
+ * @return array
+ */
+ public static function extract(array $search, $keys)
+ {
+ // Get the keys, removing the $search array
+ $keys = array_slice(func_get_args(), 1);
+
+ $found = array();
+ foreach ($keys as $key)
+ {
+ if (isset($search[$key]))
+ {
+ $found[$key] = $search[$key];
+ }
+ else
+ {
+ $found[$key] = NULL;
+ }
+ }
+
+ return $found;
+ }
+
+ /**
+ * Because PHP does not have this function.
+ *
+ * @param array array to unshift
+ * @param string key to unshift
+ * @param mixed value to unshift
+ * @return array
+ */
+ public static function unshift_assoc( array & $array, $key, $val)
+ {
+ $array = array_reverse($array, TRUE);
+ $array[$key] = $val;
+ $array = array_reverse($array, TRUE);
+
+ return $array;
+ }
+
+ /**
+ * Because PHP does not have this function, and array_walk_recursive creates
+ * references in arrays and is not truly recursive.
+ *
+ * @param mixed callback to apply to each member of the array
+ * @param array array to map to
+ * @return array
+ */
+ public static function map_recursive($callback, array $array)
+ {
+ foreach ($array as $key => $val)
+ {
+ // Map the callback to the key
+ $array[$key] = is_array($val) ? arr::map_recursive($callback, $val) : call_user_func($callback, $val);
+ }
+
+ return $array;
+ }
+
+ /**
+ * @param mixed $needle the value to search for
+ * @param array $haystack an array of values to search in
+ * @param boolean $sort sort the array now
+ * @return integer|FALSE the index of the match or FALSE when not found
+ */
+ public static function binary_search($needle, $haystack, $sort = FALSE)
+ {
+ if ($sort)
+ {
+ sort($haystack);
+ }
+
+ $high = count($haystack) - 1;
+ $low = 0;
+
+ while ($low <= $high)
+ {
+ $mid = ($low + $high) >> 1;
+
+ if ($haystack[$mid] < $needle)
+ {
+ $low = $mid + 1;
+ }
+ elseif ($haystack[$mid] > $needle)
+ {
+ $high = $mid - 1;
+ }
+ else
+ {
+ return $mid;
+ }
+ }
+
+ return FALSE;
+ }
+
+
+ /**
+ * Emulates array_merge_recursive, but appends numeric keys and replaces
+ * associative keys, instead of appending all keys.
+ *
+ * @param array any number of arrays
+ * @return array
+ */
+ public static function merge()
+ {
+ $total = func_num_args();
+
+ $result = array();
+ for ($i = 0; $i < $total; $i++)
+ {
+ foreach (func_get_arg($i) as $key => $val)
+ {
+ if (isset($result[$key]))
+ {
+ if (is_array($val))
+ {
+ // Arrays are merged recursively
+ $result[$key] = arr::merge($result[$key], $val);
+ }
+ elseif (is_int($key))
+ {
+ // Indexed arrays are appended
+ array_push($result, $val);
+ }
+ else
+ {
+ // Associative arrays are replaced
+ $result[$key] = $val;
+ }
+ }
+ else
+ {
+ // New values are added
+ $result[$key] = $val;
+ }
+ }
+ }
+
+ return $result;
+ }
+
+ /**
+ * Overwrites an array with values from input array(s).
+ * Non-existing keys will not be appended!
+ *
+ * @param array key array
+ * @param array input array(s) that will overwrite key array values
+ * @return array
+ */
+ public static function overwrite($array1, $array2)
+ {
+ foreach (array_intersect_key($array2, $array1) as $key => $value)
+ {
+ $array1[$key] = $value;
+ }
+
+ if (func_num_args() > 2)
+ {
+ foreach (array_slice(func_get_args(), 2) as $array2)
+ {
+ foreach (array_intersect_key($array2, $array1) as $key => $value)
+ {
+ $array1[$key] = $value;
+ }
+ }
+ }
+
+ return $array1;
+ }
+
+ /**
+ * Fill an array with a range of numbers.
+ *
+ * @param integer stepping
+ * @param integer ending number
+ * @return array
+ */
+ public static function range($step = 10, $max = 100)
+ {
+ if ($step < 1)
+ return array();
+
+ $array = array();
+ for ($i = $step; $i <= $max; $i += $step)
+ {
+ $array[$i] = $i;
+ }
+
+ return $array;
+ }
+
+ /**
+ * Recursively convert an array to an object.
+ *
+ * @param array array to convert
+ * @return object
+ */
+ public static function to_object(array $array, $class = 'stdClass')
+ {
+ $object = new $class;
+
+ foreach ($array as $key => $value)
+ {
+ if (is_array($value))
+ {
+ // Convert the array to an object
+ $value = arr::to_object($value, $class);
+ }
+
+ // Add the value to the object
+ $object->{$key} = $value;
+ }
+
+ return $object;
+ }
+
+} // End arr
projects / speedfreak / blobdiff